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STUDY ON CORROSION PROPERTIES OF ALUMINUM ALLOYS AT SLOW STRAIN RATE |
Jianping He;Weixun Fan;Qingming Yuan |
航空航天大学材料科学与技术学院 |
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Abstract A computing method for instantaneous corrosion rate on fresh surface of aluminum alloys was created in terms of corrosion character istic of aluminum alloys,and the effect of mechanical factors on the corrosion p roperties of LC4CS aluminum alloy has been studied with variation of strain rate .Results show that the natural corrosion potential of LC4CS aluminum alloy exhib its the negative drift trend under acting load of the constant strain rate,and t he larger the strain rate,the quicker the negative drift.In the state of galvani c couple with the aluminum alloy anodized,after the strain is above 0.04,the nat ural dissolution current will sharply increases.While strain rate is constant,th e instantaneous corrosion rate of the fresh aluminum alloy also increases with t he augmentation of strain.
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Received: 06 June 2002
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Corresponding Authors:
Jianping He
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